CN112677951B - Key groove type hand brake device capable of preventing misoperation - Google Patents
Key groove type hand brake device capable of preventing misoperation Download PDFInfo
- Publication number
- CN112677951B CN112677951B CN202110117961.0A CN202110117961A CN112677951B CN 112677951 B CN112677951 B CN 112677951B CN 202110117961 A CN202110117961 A CN 202110117961A CN 112677951 B CN112677951 B CN 112677951B
- Authority
- CN
- China
- Prior art keywords
- hand brake
- driving shaft
- protective sleeve
- drive shaft
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Braking Arrangements (AREA)
Abstract
The invention discloses a keyway type hand brake device capable of preventing misoperation, which comprises a hand brake pull rod, a locking telescopic mechanism and a driving shaft, drive axle shell and protective sheath, locking telescopic machanism is equipped with the telescopic link that receives the manual brake pull rod control, the side of drive shaft is equipped with the locking keyway that corresponds with the telescopic link, the drive shaft shell is located in the drive shaft, be equipped with drive axle shell hole on the drive shaft shell, the protective sheath cover is located on the drive shaft shell and by drive axle shell restriction axial position, be equipped with the circumference reset spring who applys circumference power to the protective sheath between protective sheath and the drive shaft shell, be equipped with the lockhole on the protective sheath, set up the rotary seal chamber between protective sheath and the drive shaft, the hydraulic oil is filled to the rotary seal intracavity, the inner wall that the protective sheath is located the rotary seal chamber is equipped with a plurality of driven vane, the week side that the drive shaft is located the rotary seal chamber is equipped with a plurality of driving vane, the locking keyway, the position of drive axle shell hole and lockhole corresponds each other. The invention can avoid the risk of vehicle out of control caused by the misoperation of the hand brake when the vehicle runs at high speed.
Description
Technical Field
The invention relates to a hand brake device, in particular to a key groove type hand brake device capable of preventing misoperation.
Background
The hand brake is parking brake, and mainly prevents the wheel from rotating by the resistance generated by the friction between the brake pad and the brake disc when the vehicle is parked, thereby preventing the vehicle from sliding. The hand brake of the existing vehicle is divided into a mechanical hand brake and an electronic hand brake, the mechanical hand brake is pulled to generate braking force, the electronic hand brake is controlled flexibly, and whether braking is performed or not can be judged through signals of various vehicle sensors, so that driving is facilitated. In a mechanical hand brake vehicle, except for special racing, the hand brake needs to be used in a high-speed running state of the vehicle, and the hand brake is not required to be started under a general condition, because the hand brake can cause locking of wheels, the vehicle is difficult to control, and danger is easy to occur. But the existing mechanical hand brake device is difficult to be intervened by electric signals to brake the vehicle at high speed, so that the vehicle cannot be out of control due to misoperation.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the key groove type hand brake device capable of preventing misoperation, the hand brake cannot take effect when the wheels rotate at high speed through a mechanical device, and the vehicle is prevented from being out of control due to locking of the vehicle in a high-speed state.
The technical scheme of the invention is as follows: a keyway type hand brake device capable of preventing misoperation comprises a hand brake pull rod, a locking telescopic mechanism, a driving shaft shell and a protective sleeve, wherein the locking telescopic mechanism is provided with a telescopic rod controlled by the hand brake pull rod, a locking keyway corresponding to the telescopic rod is arranged on the side surface of the driving shaft, the driving shaft shell is sleeved on the driving shaft, a driving shaft shell hole is formed in the driving shaft shell, the protective sleeve is sleeved on the driving shaft shell, the axial position of the protective sleeve is limited by the driving shaft shell, a circumferential reset spring for applying circumferential force to the protective sleeve is arranged between the protective sleeve and the driving shaft shell, a lock hole is formed in the protective sleeve, a rotary sealing cavity is formed between the protective sleeve and the driving shaft, hydraulic oil is filled in the rotary sealing cavity, a plurality of driven blades fixed with the protective sleeve are arranged on the inner wall of the protective sleeve, the driving shaft is located the week side of gyration seal chamber is equipped with a plurality of with the fixed initiative blade of driving shaft, the locking keyway, the drive shaft shell hole with the position of lockhole corresponds each other.
Furthermore, the locking telescopic mechanism comprises a support, a cylinder sleeve and a piston, a piston cylinder body is formed between the support and the cylinder sleeve, the piston is arranged in the piston cylinder body, the telescopic rod is connected with the piston and extends out of the lower end of the piston cylinder sleeve, a pushing spring is arranged between the top of the piston and the support, the support is provided with a through hole, and a pull cable which penetrates through the through hole is connected between the piston and the hand brake pull rod.
Further, including electron manual brake button, controller and hydraulic oil pump, electron manual brake button and hydraulic oil pump with the controller electricity is connected, hydraulic oil pump with the piston cylinder body is located the space intercommunication of piston below.
Further, a position sensor for detecting the position of the piston is arranged on the side wall of the cylinder sleeve, and the position sensor is electrically connected with the controller.
Further, the driving shaft shell comprises a front section and a rear section, annular grooves with opposite openings are formed in the end portions of the front section and the rear section, and the two ends of the protective sleeve are clamped in the annular grooves.
Further, the lateral wall of annular groove be equipped with to bellied two first stoppers in the annular groove, the inboard of the tip of protective sheath is equipped with two second stoppers, circumference reset spring connect in first stopper with between the second stopper.
Further, the driving blade is radially disposed at an outer periphery of the driving shaft and axially extends from the driving shaft, and the driven blade is radially disposed at an inner periphery of the protective sleeve and axially extends from the protective sleeve.
Further, the driving blade is disposed at an equally divided position of an outer periphery of the driving shaft, and the driven blade is disposed at an equally divided position of an inner periphery of the protective sheath.
The technical scheme provided by the invention has the advantages that:
when the vehicle goes at a high speed, the deflection of the protective sleeve is utilized to prevent the telescopic rod from extending into the locking key groove, and the problem that the manual brake is effective under a high-speed state to cause the vehicle to be out of control can be prevented. This device both can adopt the manual brake pull rod to carry out mechanical operation control and also can adopt electron manual brake button to carry out automatically controlled operation, and the function that prevents the maloperation does not rely on speed sensor, can avoid speed sensor inefficacy and cause the problem that the manual brake still can be operated under the high-speed state.
Drawings
Fig. 1 is a schematic structural diagram of a key-slot type hand brake device capable of preventing misoperation.
Fig. 2 is a schematic sectional view taken along line a-a of fig. 1.
Fig. 3 is a schematic sectional view taken along line B-B of fig. 1.
Fig. 4 is a schematic cross-sectional view of fig. 1 taken along line C-C.
Fig. 5 is a schematic cross-sectional view taken along line D-D of fig. 1. .
Detailed Description
The present invention is further illustrated by the following examples, which are to be construed as merely illustrative and not a limitation of the scope of the present invention.
Referring to fig. 1 to 5, the key-slot type handbrake device capable of preventing misoperation according to the embodiment is structured such that a support 12 is rigidly connected to a vehicle body 14, a through hole 13 is formed in the support 12, a cylinder sleeve 6 is welded on the support 12, and a piston cylinder is formed between the support 12 and the cylinder sleeve 6. The T-shaped piston 9 is inserted into the cylinder sleeve 6, when the T-shaped piston 9 moves upwards, air in the cylinder sleeve 6 is discharged from the through hole 13, and when the T-shaped piston 9 moves downwards, outside air enters the cylinder sleeve 6 from the through hole 13 for supplement. The telescopic rod 8 is rigidly connected with the bottom surface of the T-shaped piston 9 and can extend out of the lower end of the cylinder sleeve 6. A position sensor 10 is provided on the side wall of the cylinder liner 6 for detecting the presence of the T-shaped piston 9. A pushing spring 11 is arranged between the T-shaped piston 9 and the support 12. The cable 15 is connected to the T-shaped piston 9, passes through the support 12 and the vehicle body 14, and is connected to the handbrake lever 16. The middle part of the hand brake pull rod 16 is hinged and supported by a support 17 welded on the vehicle body 14, the head part of the hand brake pull rod 16 is an operation end, the tail part of the hand brake pull rod 16 is adjacent to the inhaul cable 15, when the hand brake pull rod 16 is pulled up, the inhaul cable 15 is lowered, and when the hand brake pull rod 16 is pressed down, the inhaul cable 15 is pulled up. Hydraulic oil 7 is injected into the piston cylinder body below the T-shaped piston 9, the left side of the cylinder sleeve 6 is connected with a hydraulic oil pump 4 through a hydraulic oil pipe 5, and a hydraulic oil tank 3 is arranged beside the hydraulic oil pump 4. An electronic hand brake button 1 is arranged to control the ECU 2 to send signals to the hydraulic oil pump 4, and the hydraulic oil pump 4 and the position sensor 10 are also electrically connected with the ECU 2.
A driving shaft 19 is arranged below the telescopic rod 8, a locking key groove 23 is arranged on the driving shaft, the locking key groove 23 corresponds to the telescopic rod 8 in position, and the section of the locking key groove 23 is slightly larger than the bottom surface of the telescopic rod 8. The drive shaft 19 is externally sleeved with a drive shaft shell 18, and the drive shaft shell 18 is fixed in position and comprises a front section and a rear section which are separated. A drive shaft housing hole 22 is provided in the rear section of the drive shaft housing 18 at the same position as the lock key groove 23, and has the same size as the lock key groove 23. The ends of the front and rear sections of the drive shaft housing 18 are provided with oppositely opening annular grooves 20. A protective sleeve 24 is inserted into the annular groove 20, and the protective sleeve 24 and the rear end of the drive shaft housing 18 have a certain overlap in the axial direction. The lock hole 21 having the same size as the lock key groove 23 is provided in the cover 24 and is located corresponding to both the lock key groove 23 and the drive shaft housing hole 22. End caps 30 are provided on both sides of the protective sleeve 24 so that a rotary seal chamber is formed between the protective sleeve 24 and the drive shaft 19 and is filled with hydraulic oil 7. Two first limiting blocks 27 protruding into the annular groove 20 are arranged on the side wall of the annular groove 20, two second limiting blocks 26 are arranged on the inner side of the end part of the protective sleeve 24, and the second limiting blocks 26 are located between the first limiting blocks 27. An arc-shaped circumferential return spring 25 is respectively connected between the two groups of first stop blocks 27 and second stop blocks 26. In the absence of external force, the two circumferential return springs 25 fix the position of the protective sleeve 24 relative to the drive shaft housing 18, with the drive shaft housing bore 22 overlapping the locking bore 21. At the position of the rotary seal chamber, driving vanes 28 are provided at the outer circumference quartering position of the driving shaft 19, each driving vane 28 is radially provided and axially extends, correspondingly, driven vanes 29 are provided at the inner circumference quartering position of the protective cover 24, and each driven vane 29 is radially provided and axially extends.
The key groove type hand brake device capable of preventing misoperation has the following working process:
when the electronic hand brake button 1 is clicked, the ECU 2 is in a locking state according to the detection of the position sensor 10, the ECU 2 orders the hydraulic oil pump 4 to charge hydraulic oil 7 into the cylinder sleeve 6, the T-shaped piston 9 overcomes the jacking force of the jacking spring 11, the telescopic rod 8 is withdrawn from the locking key groove 23, and the automobile hand brake is unlocked.
When the electronic hand brake button 1 is clicked, the ECU 2 is in an unlocked state according to the detection of the position sensor 10, the ECU 2 commands the hydraulic oil pump 4 to unload hydraulic oil 7 to the cylinder sleeve 6, the T-shaped piston 9 moves downwards under the pushing force of the pushing spring 11, and the telescopic rod 8 also moves downwards along with the T-shaped piston. 1) If the automobile is low in speed or stopped at the moment, the driving shaft 19 stops rotating or has a small rotation amplitude, the driving blade 28 cannot stir oil to drive the protective sleeve 24 to rotate, and the second limiting block 26 is located at a preset position under the action of the pre-tightening force of the circumferential return spring 25, so that the positions of the lock hole 21, the driving shaft shell hole 22 and the lock key groove 23 on the protective sleeve 24 are enabled to be coincident. At this time, the descending telescopic rod 8 may be inserted into the locking key groove 23 immediately, or the telescopic rod 8 may be inserted into the locking key groove 23 finally after the vehicle slides a slight distance forward and backward to rotate the driving shaft 19 within one circle, so as to prevent the driving shaft 19 from rotating continuously, thereby playing a braking role. 2) If the automobile speed is higher this moment, and the 19 rotational speeds of drive shaft are higher, and driving blade 28 stirs fluid and drives protective sheath 24 and rotate, and the pretightning force of circumference reset spring 25 is overcome to second stopper 26 and first stopper 27 under driven blade 29's drive this moment, lets originally and lockhole 21 dislocation at the same position with locking keyway 23 make during telescopic link 8 can't insert locking keyway 23, plays the guard action when the automobile goes.
When the electronic hand brake system is in a fault state, such as mechanical failure of the electronic hand brake button 1, electrical failure of the ECU 2 or the position sensor 10, and hydraulic failure of the hydraulic oil pipe 5 or the cylinder sleeve 6, manual operation can be started.
When the hand brake pull rod 16 is put down, the T-shaped piston 9 is pulled up by the pull cable 15 through the through hole 13, the telescopic rod 8 is pulled away from the driving shaft 19, and the automobile is in an unlocking state.
When the hand brake pull rod 16 is pulled up, the hand brake pull rod 16 releases the pull rope 15, the T-shaped piston 9 moves downwards under the pushing force of the pushing spring 11, and the telescopic rod 8 also moves downwards along with the T-shaped piston. 1) If the automobile is low in speed or stopped at the moment, the driving shaft 19 stops rotating or has a small rotation amplitude, the driving blade 28 cannot stir oil to drive the protective sleeve 24 to rotate, and the second limiting block 26 is located at a preset position under the action of the pre-tightening force of the circumferential return spring 25, so that the positions of the lock hole 21, the driving shaft shell hole 22 and the lock key groove 23 on the protective sleeve 24 are enabled to be coincident. At this time, the descending telescopic rod 8 may be inserted into the locking key groove 23 immediately, or the telescopic rod 8 may be inserted into the locking key groove 23 finally after the vehicle slides a slight distance forward and backward to rotate the driving shaft 19 within one circle, so as to prevent the driving shaft 19 from rotating continuously, thereby playing a braking role. 2) If the automobile speed is higher this moment, and the 19 rotational speeds of drive shaft are higher, and driving blade 28 stirs fluid and drives protective sheath 24 and rotate, and the pretightning force of circumference reset spring 25 is overcome to second stopper 26 and first stopper 27 under driven blade 29's drive this moment, lets originally and lockhole 21 dislocation at the same position with locking keyway 23 make during telescopic link 8 can't insert locking keyway 23, plays the guard action when the automobile goes.
Claims (8)
1. A key groove type hand brake device capable of preventing misoperation is characterized by comprising a hand brake pull rod, a locking telescopic mechanism, a driving shaft shell and a protective sleeve, wherein the locking telescopic mechanism is provided with a telescopic rod controlled by the hand brake pull rod, the side surface of the driving shaft is provided with a locking key groove corresponding to the telescopic rod, the driving shaft shell is sleeved on the driving shaft, the driving shaft shell is provided with a driving shaft shell hole, the protective sleeve is sleeved on the driving shaft shell and is limited in axial position by the driving shaft shell, a circumferential reset spring for applying circumferential force to the protective sleeve is arranged between the protective sleeve and the driving shaft shell, the protective sleeve is provided with a lock hole, a rotary sealing cavity is arranged between the protective sleeve and the driving shaft, the rotary sealing cavity is filled with hydraulic oil, the inner wall of the protective sleeve, which is positioned in the rotary sealing cavity, is provided with a plurality of driven blades fixed by the protective sleeve, the driving shaft is provided with a plurality of driving blades fixed with the driving shaft on the peripheral side of the rotary sealing cavity, and the locking key groove, the driving shaft shell hole and the lock hole are in mutual correspondence; when the drive shaft rotated fast, the initiative blade stirred hydraulic oil drives the protective sheath rotates, drive shaft stall or rotation amplitude are very little, the initiative blade can't stir hydraulic oil drives the protective sheath rotates.
2. The key groove type hand brake device capable of preventing misoperation according to claim 1, wherein the locking telescopic mechanism comprises a support, a cylinder sleeve and a piston, a piston cylinder body is formed between the support and the cylinder sleeve, the piston is arranged in the piston cylinder body, the telescopic rod is connected with the piston and extends out of the lower end of the piston cylinder sleeve, a pushing spring is arranged between the top of the piston and the support, the support is provided with a through hole, and a pull rope penetrating through the through hole is connected between the piston and the hand brake pull rod.
3. The key groove type hand brake device capable of preventing misoperation according to claim 2, comprising an electronic hand brake button, a controller and a hydraulic oil pump, wherein the electronic hand brake button and the hydraulic oil pump are electrically connected with the controller, and the hydraulic oil pump is communicated with a space of the piston cylinder body below the piston.
4. A key slot type hand brake device capable of preventing misoperation according to claim 3, wherein the side wall of the cylinder sleeve is provided with a position sensor for detecting the position of the piston, and the position sensor is electrically connected with the controller.
5. The key groove type hand brake device capable of preventing misoperation according to claim 1, wherein the driving shaft shell comprises a front section and a rear section, annular grooves with opposite openings are formed in the end parts of the front section and the rear section, and two ends of the protective sleeve are clamped in the annular grooves.
6. The key groove type hand brake device capable of preventing misoperation according to claim 5, wherein two first limiting blocks protruding into the annular groove are arranged on the side wall of the annular groove, two second limiting blocks are arranged on the inner side of the end part of the protective sleeve, and the circumferential reset spring is connected between the first limiting blocks and the second limiting blocks.
7. A key slot type handbrake device against misoperation according to claim 1, wherein said driving vanes are radially disposed and extend in an axial direction of said drive shaft at an outer periphery of said drive shaft, and said driven vanes are radially disposed and extend in an axial direction of said protective sleeve at an inner periphery of said protective sleeve.
8. A key slot type handbrake device against misoperation according to claim 7, wherein said driving blade is arranged at an equally divided position of the outer periphery of said driving shaft and said driven blade is arranged at an equally divided position of the inner periphery of said protective sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110117961.0A CN112677951B (en) | 2021-01-28 | 2021-01-28 | Key groove type hand brake device capable of preventing misoperation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110117961.0A CN112677951B (en) | 2021-01-28 | 2021-01-28 | Key groove type hand brake device capable of preventing misoperation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112677951A CN112677951A (en) | 2021-04-20 |
| CN112677951B true CN112677951B (en) | 2022-03-08 |
Family
ID=75459416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110117961.0A Active CN112677951B (en) | 2021-01-28 | 2021-01-28 | Key groove type hand brake device capable of preventing misoperation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112677951B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5457726A (en) * | 1977-10-17 | 1979-05-09 | Nissan Motor Co Ltd | Two operation release system stick type parking brake |
| JPS59137234A (en) * | 1983-01-25 | 1984-08-07 | Isuzu Motors Ltd | Lock device of shift lever |
| CN86106767A (en) * | 1986-01-24 | 1987-08-05 | 斯皮罗轿车维修公司 | The latching device that the vehicle manual brake operating lever is used |
| GB0300447D0 (en) * | 2003-01-08 | 2003-02-12 | Stott William M | Security device |
| CN102837686A (en) * | 2012-08-30 | 2012-12-26 | 浙江力邦合信汽车制动系统有限公司 | Parking braking executing mechanism |
| CN107792027A (en) * | 2017-09-28 | 2018-03-13 | 徐工集团工程机械股份有限公司 | A kind of holding brake device and road roller |
| CN109649350A (en) * | 2018-12-14 | 2019-04-19 | 常熟理工学院 | A kind of quincuncial pile formula electronics hand brake device and its control mode |
-
2021
- 2021-01-28 CN CN202110117961.0A patent/CN112677951B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5457726A (en) * | 1977-10-17 | 1979-05-09 | Nissan Motor Co Ltd | Two operation release system stick type parking brake |
| JPS59137234A (en) * | 1983-01-25 | 1984-08-07 | Isuzu Motors Ltd | Lock device of shift lever |
| CN86106767A (en) * | 1986-01-24 | 1987-08-05 | 斯皮罗轿车维修公司 | The latching device that the vehicle manual brake operating lever is used |
| GB0300447D0 (en) * | 2003-01-08 | 2003-02-12 | Stott William M | Security device |
| GB2397091A (en) * | 2003-01-08 | 2004-07-14 | William May Stott | Security device |
| CN102837686A (en) * | 2012-08-30 | 2012-12-26 | 浙江力邦合信汽车制动系统有限公司 | Parking braking executing mechanism |
| CN107792027A (en) * | 2017-09-28 | 2018-03-13 | 徐工集团工程机械股份有限公司 | A kind of holding brake device and road roller |
| CN109649350A (en) * | 2018-12-14 | 2019-04-19 | 常熟理工学院 | A kind of quincuncial pile formula electronics hand brake device and its control mode |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112677951A (en) | 2021-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8056683B2 (en) | Electric disk brake and lock mechanism | |
| CN102975579B (en) | The running driving device of tip car | |
| US6250433B1 (en) | Positive-locking vehicular parking brake | |
| US9751622B2 (en) | Wheel motorizing system, notably for an aircraft wheel | |
| JP4782715B2 (en) | Electric swivel device | |
| US20160069404A1 (en) | Face Tooth Hydraulic Piston Brake | |
| EP2137427B1 (en) | Electric parking brake | |
| CN108674403A (en) | Electric booster braking device and braking method | |
| CN105270361A (en) | Electronic parking brake for vehicle and control method thereof | |
| CN112677951B (en) | Key groove type hand brake device capable of preventing misoperation | |
| US6626269B2 (en) | Zero drag disc brake with anti-knock-back device | |
| US5992576A (en) | Parking lock with secondary brake | |
| US5766047A (en) | Twin propeller marine propulsion unit | |
| CN111237453A (en) | Mechanical unlocking mechanism for electronic parking | |
| CN201165227Y (en) | Parking brake locking apparatus of motor vehicle | |
| WO2006115386A1 (en) | Brake apparatus for the elebator | |
| EP0287099B1 (en) | A hydraulic retarder attached with parking brake | |
| US4392832A (en) | Steering and propulsion system for marine use | |
| JPS5911965A (en) | Electric power steering device | |
| CN108061076B (en) | A kind of hydraulic leg mechanical locking device | |
| KR102444155B1 (en) | Rotary wing aircraft with a transmission system equipped with an emergency electric motor | |
| CN108128295A (en) | For running the method for at least one parking brake of motor vehicle | |
| CN115610390A (en) | Control method of electronic parking brake | |
| CN106979262A (en) | A kind of hydraulic rail-clamping brakes of mine endless rope winch | |
| CN203078225U (en) | Steering driving front axle of excavator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |